CN114636638A

CN114636638A - Method for evaluating cigar rolling uniformity

Info

Publication number: CN114636638A
Application number: CN202210283075.XA
Authority: CN
Inventors: 范静苑; 史占东; 胡希; 苗芊; 廖占和; 李栋; 胡婉蓉; 贺琛; 薛芳; 李青常; 周康
Original assignee: China Tobacco Sichuan Industrial Co Ltd; Zhengzhou Tobacco Research Institute of CNTC
Current assignee: China Tobacco Sichuan Industrial Co Ltd; Zhengzhou Tobacco Research Institute of CNTC
Priority date: 2022-03-22
Filing date: 2022-03-22
Publication date: 2022-06-17

Abstract

The invention discloses a method for evaluating cigar rolling uniformity, which comprises the following steps of (1) testing the suction resistance of cigars, wherein in the testing process, the wrapping depth of a wrapping head of a suction resistance tester in the length direction of a tested cigar sample is adjusted, and the suction resistance data of different wrapping depths are tested for the same tested cigar sample; (2) calculating the average value and the standard deviation of the suction resistance data of different wrapping depths obtained from the same detected cigar sample; (3) the standard deviation is divided by the mean to obtain the absolute standard deviation, and the calculation results are used to evaluate the cigar rolling uniformity. The evaluation method can objectively and accurately test and record various numerical values and accurately represent the external and internal rolling uniformity degree.

Description

Method for evaluating cigar rolling uniformity

Technical Field

The invention relates to a method for evaluating cigar rolling uniformity.

Background

The cigar is a special tobacco product, the traditional cigar is usually a whole-leaf roll handmade cigar, namely, the three parts of the core, the sleeve and the coat are all rolled by taking tobacco leaves as raw materials, and the whole manufacturing process is finished manually.

The cigar rolling uniformity is an important index for evaluating cigar rolling quality. The cigar with good rolling uniformity has the advantages that the shape of the whole cigar is uniform and consistent without depressions or bulges, and the cigar is attractive in appearance; from a deeper level, the tobacco leaves in the cigars are uniformly distributed in the cigars, the formed internal smoke channel is uniformly and smoothly distributed, stable smoke can be provided during smoking, the cigarettes are uniformly and stably burnt, and the characteristics of the cigars in fragrance and taste can be fully displayed. If the cigars are rolled unevenly, the surface of the cigars can be sunken and raised, the obvious quality defect problem is sometimes not easy to be identified by naked eyes, and the quality problem products flow into the market, so that the first impression of consumers on the products is influenced, and the overall impression of brands is influenced; abnormal combustion phenomena such as partial combustion, internal combustion and the like of cigarettes easily occur during smoking of unevenly rolled cigars, or the smoking is not smooth, the special flavor and taste and style change characteristics of the cigars cannot be accurately reflected, and consumers cannot obtain pleasurable smoking feeling.

Because the cigars are made by manual rolling, different operators roll the cigars with difference and instability of operation skills, and the cigars have more rolling methods, larger difference, more rolling procedures and more factors influencing quality formation. The main factors influencing the cigar rolling uniformity are the rolling method of cigar blanks, the skill level of operators, the operation stability of each rolling process and the like. There are three major methods for rolling cigar blanks, including intubado Bunch (engtoba), Accordion Bunch (Accordion), and Book-roll, each of which has its own features. The Entubado Bunch (Endbumo type) firstly rolls each eggplant core tobacco leaf into a bundle shape, then integrates the independent leaf bundles into a bundle according to the inside and outside sequence, and finally wraps the tobacco leaves with eggplant sleeve tobacco leaves to form tobacco embryos. When the Accordion Bunch (Accordion) is rolled, each piece of eggplant core tobacco leaves is firstly folded from outside to inside to a certain width, and then the tobacco leaves are stacked together and wrapped by eggplant sleeves to form tobacco blanks. The Book-rolled type tobacco leaf is prepared by firstly spreading several eggplant core tobacco leaves of the formula completely, then spreading the tobacco leaves together according to the inside and outside sequence, and then rolling the tobacco leaves into a cylinder from one side and then wrapping the tobacco leaves with eggplant sheath tobacco leaves. The cigar rolling method mainly comprises the steps of formula metering, material preparation inspection, inner blank rolling, pressing and shaping, suction resistance picking, cigar coat coating, cutting to a fixed length and cigarette checking.

The quality inspection can be carried out on semi-finished product cigarette blanks and finished product cigarettes in the rolling process, the currently adopted method mainly comprises sensory identification, namely whether obvious depressions or bulges exist in the appearance of the cigarettes is observed through eyes, and when the eyes observe that the obvious depressions or bulges cannot be determined, a hand touch mode is adopted, namely whether the obvious depressions or bulges exist after the hands touch the cigarette from the head to the tail of the cigarettes.

The existing method has the defects that: (1) the eye-watching hand belongs to subjective behaviors, quality inspectors cannot make the same judgment on the same rolling uneven quality defects because of insufficient experience or different judging capabilities, and therefore unqualified products flow into the next procedure; (2) the quality inspection belongs to spot inspection, even if all the inspection is carried out, the fish with missing nets and the next procedure of the unqualified product flow are inevitable; (3) the method of observing hands by eyes can not judge whether the smoke channel formed by the eggplant core tobacco leaves exists inside the cigarette is smooth or not, so that whether the cigarette is smooth or not during smoking can not be accurately judged.

Therefore, there is a need to invent a method for evaluating cigar rolling uniformity, which can objectively evaluate the appearance quality and the inherent rolling quality, thereby providing a basis for improving the overall cigar rolling quality.

Disclosure of Invention

The invention also provides a method for objectively evaluating the appearance quality and the inherent rolling quality of cigars, overcomes the defects of the prior art, and provides an implementation mode of the method for evaluating the rolling uniformity of cigars, so that the uniformity of the cigars can be objectively evaluated.

One implementation mode of the invention adopts the following technical scheme:

a method of evaluating cigar rolling uniformity, comprising the steps of:

(1) the method comprises the following steps of testing the suction resistance of the cigars, adjusting the wrapping depth of a wrapping head of a suction resistance tester in the length direction of a cigar sample to be tested in the testing process, and testing the suction resistance data of different wrapping depths of the same cigar sample to be tested;

(2) calculating the average value and the standard deviation of the suction resistance data of different wrapping depths obtained from the same detected cigar sample;

(3) the standard deviation of the same tested cigar sample is divided by the average value to obtain the absolute standard deviation, and the obtained calculation result is used for evaluating the cigar rolling uniformity.

In the above-described method of evaluating the uniformity of cigar roll formation, a larger value of the calculated result of dividing the standard deviation by the average value (i.e., absolute standard deviation) indicates a better uniformity of roll formation of the cigar sample to be tested.

Because the same tested cigar sample needs to be tested according to the suction resistance data of different wrapping depths, in order to ensure the testing uniformity, a suction resistance tester capable of adjusting the tested cigar sample to test the wrapping depth is used for testing the suction resistance of the tested cigar sample.

Generally, the wrap head configuration of the resistance tester determines the wrap depth for the cigar sample being tested and whether the wrap depth can be adjusted.

The suction resistance tester accessory capable of adjusting the package depth is connected with the suction resistance tester, tested cigar samples are inserted into the accessory one by one, and the suction resistance of cigars under different package depths is tested. The accessory adopts a latex tube or other materials with relatively unchanged wrapping force to wrap the tested cigar sample.

In the suction resistance tester, the suction resistance data of each wrapping depth is tested, the wrapping depth of the accessories to the cigars is adjusted, the gradient and the uniformity of the wrapping depth are increased, and the suction resistance data after the wrapping depth is adjusted every time is tested.

The average value is calculated by calculating the average of the suction resistance data of the same detected cigar sample at different wrapping depths.

The standard deviation S is calculated in the manner that

Wherein

Representative of the sample X tested₁、X₂、X₃……X_nN is the sample number, and N represents the total sample amount.

3-50 suction resistance data of different wrapping depths can be tested on the same cigar sample to be tested, 3-10 tests are more conventional operation modes, and more tests can be carried out under the condition of special requirements.

Preferably, the wrapping mode of the wrapping head on the tested cigar sample adopts a latex tube for wrapping, each tested cigar sample tests the suction resistance data of at least 3 different wrapping depths, and when the suction resistance data of the first wrapping depth is tested, the wrapping head wraps the tested cigar sample by 10-30 mm; when the suction resistance data of the second wrapping depth is tested, the wrapping depth of the wrapping head to the tested cigar sample is half of the length of the tested cigar sample, and when the suction resistance data of the third wrapping depth is tested, the wrapping depth of the wrapping head to the tested cigar sample is full wrapping.

When the length of the tested cigar sample is 110-200 mm, the wrapping depth can be 10mm, 15mm, 20mm, 25mm … … 50mm, 55mm, 60mm … … 80mm, 90mm, 100mm … … 150mm, 155mm, 160mm … … 190mm, 195mm, 200mm, and any value between the wrapping depths.

Preferably, in the same batch of cigars, more than 10 cigars are randomly selected to form a set of cigar samples to be tested, the cigar samples to be tested in the set are tested with the smoking resistance data of a plurality of different wrapping depths, the absolute standard deviation of the smoking resistance data of each cigar sample to be tested is calculated, the absolute standard deviation of the smoking resistance data of all cigar samples to be tested in the set is subjected to arithmetic mean, and the rolling uniformity of the cigars in the batch is evaluated according to the arithmetic mean, wherein the arithmetic mean is better.

In the same batch of cigars, 10 to 50 cigars can be randomly selected to form the cigar sample set to be tested.

And presetting a required value of the absolute standard deviation of the cigar sample with qualified uniformity according to the actual production requirement, and judging that the uniformity of the tested cigar sample is unqualified when the calculated absolute standard deviation is smaller than the required value.

In the invention, the suction resistance testing device and the suction resistance tester refer to the same product.

In order to realize the method, the invention provides a cigar resistance testing device which comprises a base, an upper wrapping head assembly, a lower wrapping head assembly, a height adjusting assembly, an upper sleeve, a lower sleeve, an upper rubber sleeve opening air passage and a lower rubber sleeve opening air passage, wherein the upper rubber sleeve opening air passage is arranged on the base; the height adjusting assembly is vertically arranged on the base, and is provided with a sliding connecting seat and drives the sliding connecting seat to slide; the upper sleeve is fixed on the upper sleeve fixing block, and the sliding connecting seat is fixedly connected with the upper sleeve fixing block; the upper packing head assembly is mounted at the top of the upper sleeve, and the upper rubber sleeve opening air passage is arranged on the upper sleeve and communicated with the upper packing head assembly; the upper sleeve is sleeved on the lower sleeve, the lower wrapping head assembly is installed at the upper end of the lower sleeve, the lower rubber sleeve is opened to enable the air channel to be arranged on the lower sleeve and communicated with the lower wrapping head assembly, a suction resistance suction air channel is arranged in the lower sleeve and communicated with the lower wrapping head assembly, the lower sleeve is fixed on the lower sleeve fixing block, and the sliding connection seat is fixedly connected with the lower sleeve fixing block.

Go up the parcel head subassembly and include emulsion cover, parcel head and O type sealing washer, the inside cavity that is of parcel head, both ends opening from top to bottom, lower extreme is provided with O type sealing washer mounting groove respectively on the outer fringe of parcel head, the O type sealing washer is installed in O type sealing washer mounting groove, be provided with the gas circulation groove on the lateral wall at parcel head middle part, the gas circulation inslot is provided with the gas pocket, the gas pocket runs through the first lateral wall of parcel, with the inside cavity intercommunication of parcel head, emulsion cover installs in the parcel head, install at the overhead upper end of parcel on its upper end, its lower extreme is installed under the parcel head.

Lower parcel head subassembly include the emulsion cover, parcel head and O type sealing washer, the inside cavity that is of parcel head, upper and lower both ends opening, lower extreme is provided with O type sealing washer mounting groove respectively on the outer fringe of parcel head, the O type sealing washer is installed in O type sealing washer mounting groove, be provided with the gas circulation groove on the lateral wall at parcel head middle part, the gas circulation inslot is provided with the gas pocket, the gas pocket runs through parcel head lateral wall, with the inside cavity intercommunication of parcel head, the emulsion cover is installed in parcel head, install at the overhead upper end of parcel on its upper end, its lower extreme is installed under the parcel head.

One end of the gas path opened by the gluing sleeve is communicated with the gas circulation groove, and the other end of the gas path opened by the gluing sleeve is connected with the gas path of the vacuum generator.

One end of the lower rubber sleeve opening air passage is communicated with the gas circulation groove, and the other end of the lower rubber sleeve opening air passage is connected with the air passage of the vacuum generator.

The inner part of the upper sleeve is provided with a cavity, the upper end part and the lower end part of the upper sleeve are respectively provided with an opening communicated with the cavity, and the upper wrapping head assembly is arranged in the opening at the upper end part of the upper sleeve.

The outer side wall of the lower sleeve is provided with a sealing ring mounting groove which is an upper sealing ring mounting groove and a lower sealing ring mounting groove respectively, sealing rings are mounted in the two sealing ring mounting grooves respectively, a counter bore is formed in the upper end part of the lower sleeve, and the lower wrapping head assembly is mounted in the counter bore.

The upper end of the suction resistance suction air passage is communicated with the counter bore, and the lower end of the suction resistance suction air passage extends out of the lower sleeve and is connected with a suction resistance measuring sensor.

The inside cylindric cavity body that is of upper sleeve, lower sleeve is the cylinder, and upper sleeve cover is established on lower sleeve, and the contact surface of the two forms sealedly through lower telescopic sealing washer.

The height adjusting assembly comprises a ball screw, an upright post and a linear guide rail, the lower end of the ball screw is mounted on a lower fixed seat, a bearing is arranged in the lower fixed seat and connected with the lower end of the ball screw, the lower fixed seat is connected with the base to enable the ball screw to be vertical to the base, and a ball screw nut is arranged on the ball screw; the lower extreme of stand with the base is perpendicular installation, and is parallel with ball, linear guide with the base is perpendicular installation, and fixes on the stand, is equipped with the slider on the linear guide, and the slider can be followed linear guide and moved, the ball nut the slider sliding connection seat relatively fixed, ball's upper end is equipped with the fixing base, is equipped with the bearing in going up the fixing base, and ball's upper end runs through the fixing base, and ball's upper end tip is located the fixing base top, has the hand wheel at ball's upper end fixing, and the upper end of stand is fixed on last fixing base.

The cigar resistance testing device has the following characteristics: 1. the sectional sealing of the cigar sample adopts the elastic characteristic of the latex sleeve, when vacuum pressure is applied to the cigar sample, the latex sleeve generates elastic deformation to expand the inner wall of the latex sleeve and is larger than the diameter of the cigar sample, so that the cigar can be conveniently placed in the latex sleeve, and after the vacuum pressure disappears, the latex sleeve recovers the original shape characteristic to wrap the cigar sample. 2. The air path sealing adopts an O-shaped sealing ring sealing mode. 3. The negative pressure source is a vacuum generator that converts compressed air into a vacuum environment. 4. The ball screw is used for converting the rotary motion into the linear motion for height adjustment. 5. In order to ensure the movement and the coaxiality between the upper sleeve and the lower sleeve, a linear guide rail mode is adopted, and in the process of adjusting the height, only axial relative displacement occurs between the upper sleeve and the lower sleeve.

Cigar resistance test device can be in length direction's cigar resistance of inhaling parcel test head, and the test head is the sectional type parcel, and two sections test heads come to realize the parcel of different length to the cigar, can realize half parcel, full parcel or the parcel of specific length dimension to the cigar. In the study of the cigar resistance index, the influence of different package lengths on cigar resistance can be verified.

Compared with the prior art, the invention has at least the following beneficial effects:

1. the evaluation method related by the invention can objectively and accurately test and record various numerical values and accurately represent the external and internal rolling uniformity degree. The main function of the resistance-smoking tester is to test the resistance of cigars and evaluate the difficulty of smoke passing through the cigars. Through the different positions of parcel cigar, exert certain clamping-force to the different positions of cigar, make corresponding clamping position produce small deformation, because of the clamping-force size is almost unchangeable, small deformation can change because of rolling the homogeneity difference, and then the difference degree of the resistance value that the cigar of rolling the homogeneity difference record when the different positions of centre gripping has the difference to this inside problem of rolling the structure of sign cigar.

2. The evaluation method can improve the consistency of product quality and improve the accuracy of quality inspection. The evaluation method related by the invention can avoid the defect that the rolled product is not uniform to flow into the next production link due to inaccurate subjective judgment by means of instruments rather than subjective judgment, or can avoid the unqualified product to flow into the next production link due to the fact that the rolling phenomenon is not uniform due to subjective failure. The method utilizes equipment to visually reflect whether the rolling is uniform or not through numbers, and the inspected cigars can accurately display the data so as to make accurate judgment, so that all unqualified products caused by non-uniform rolling can be detected.

3. The evaluation method related by the invention is characterized in that the related test instrument is a suction resistance tester, the suction resistance condition of each cigarette can be mastered while the rolling uniformity is evaluated, and other equipment is not required to be added.

4. The testing method is simple and efficient, and a result value and a judgment result can be directly obtained through simple computer special software and an analysis method.

Drawings

FIG. 1 is a cross-sectional view of a cigar resistance test device of the present invention;

FIG. 2 is a partial schematic view of the bursting construction of the pack head and the upper sleeve of the present invention;

FIG. 3 is an exploded view of the wrapping head of the present invention;

FIG. 4 is a partial cross-sectional view of the lower sleeve of the present invention;

FIG. 5 is a partial cross-sectional view of the upper sleeve of the present invention;

FIG. 6 is a schematic view of the upper and lower sleeves of the present invention;

FIG. 7 is a perspective view of the height adjustment assembly of the present invention;

FIG. 8 is a partial cross-sectional view of a cigar resistance test device in accordance with the present invention;

FIG. 9 is a self-contained view of the cigar resistance test device of the present invention;

the numbers in the figure each represent: 1. a base; 2. closing the valve; 3. a lower sleeve fixing block; 4. an upper sleeve fixing block; 5. a lower sleeve; 6. opening an air path by the lower rubber sleeve; 7. a suction resistance suction gas path; 8. an upper sleeve; 9. a seal ring; 10. a lower wrapping head; 11. opening an air path by a rubber sleeve; 12. an upper wrapping head; 13. a hand wheel; 14. a linear guide rail; 15. a ball screw; 16. an upper fixed seat; 17. a lower fixed seat; 18. a ball screw nut; 19. a sliding connection seat; 20. a slider; 21. a column; 22. a latex sleeve; 23. an O-shaped sealing ring; 24. air holes; 25. measuring a scale; 26. a sealing ring mounting groove; 27. and a gas circulation groove.

FIG. 10 is a trend chart of the results of the uniformity test for 8 standard cigar blanks.

FIG. 11 is a trend chart of the results of the manual inspection test of unevenness of 8-sized cigar rolls.

FIG. 12 is a line graph of the test results of the uniformity test of the 30 sample rolls of sample A.

FIG. 13 is a line graph of the test results of the uniformity test of the rolled 30 samples of sample E.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Embodiment 1 Structure of cigar resistance test device

The cigar resistance testing device comprises a height adjusting assembly, an upper wrapping head assembly, a lower wrapping head assembly, an upper sleeve, a lower sleeve and a base. The construction of the cigar resistance test device is shown in fig. 8 and 9, and the construction of each part of the device will be described below with reference to fig. 1 to 7.

As shown in fig. 1 and 7, the height adjusting assembly includes a ball screw 15, a column 21, and a linear guide 14; the lower extreme of ball is installed under on fixing base 17, is equipped with the lower extreme that bearing and ball 15 in the fixing base 17 down and is connected, and lower fixing base is connected with base 1, makes ball and base be perpendicular, is equipped with ball nut 18 on the ball, ball nut 18 and ball screw thread fit to make ball nut can be the up-and-down motion on ball. The lower end of the upright post 21 is vertically arranged with the base 1, and the upright post 21 is parallel with the ball screw 15. The linear guide rail 14 is vertically installed with the base and fixed on the upright post 21, and the linear guide rail is provided with a slide block 20 which can move up and down along the linear guide rail. The ball screw nut 18 is fixed to the slider 20 of the linear guide, and the slider slides up and down when the ball screw nut 18 slides up and down. The upper end of ball is equipped with fixing base 16, goes up to be equipped with the bearing in the fixing base, and ball's upper end runs through the fixing base, and ball's upper end tip is located the fixing base top, and the upper end fixing of ball has hand wheel 13, and the upper end of stand 21 is fixed on last fixing base 16. The height adjusting assembly is provided with a sliding connection seat 19, and the ball screw nut and the slide block of the linear slide rail are fixed on the sliding connection seat 19 so as to realize synchronous movement of the ball screw nut and the slide block. The ball screw is rotated by rotating the hand wheel, so that the ball screw nut moves up and down along the ball screw, the slide block of the linear slide rail is driven by the slide connecting seat to move up and down, the ball screw converts the rotation motion into linear motion, and the linear guide rail ensures the linearity and rigidity in the up-and-down motion process.

As shown in fig. 1, 2, 3, and 5, the upper sleeve 8 is cylindrical, and has a cylindrical cavity therein, the upper end portion and the lower end portion of the upper sleeve are both provided with openings, and the openings of the upper end portion and the lower end portion are both communicated with the cylindrical cavity in the upper sleeve. The upper wrapping head assembly is arranged in an opening at the upper end part of the upper sleeve and consists of a latex sleeve 22, a wrapping head and an O-shaped sealing ring 23, the wrapping head is an upper wrapping head 12, and the latex sleeve 22 is tubular in shape in a negative pressure state. The inside of the wrapping head is a cavity, and the upper end and the lower end of the wrapping head are open, so that the cavity in the wrapping head is communicated with the cavity in the upper sleeve. The lower extreme is provided with O type sealing washer mounting groove respectively on the outer fringe of parcel head, and O type sealing washer is installed in O type sealing washer mounting groove, is provided with gas circulation groove 27 between two O type sealing washer mounting grooves on the lateral wall at parcel head middle part promptly, and the gas circulation inslot is provided with gas pocket 24, and the gas pocket runs through parcel head lateral wall, communicates with inside cavity. Latex sleeve 22 is installed in the parcel head, and its upper end is installed at the first upper end of parcel, and the lower extreme is installed at the first lower extreme of parcel. The upper sleeve 8 is provided with a gluing sleeve opening air passage 11, one end of the gluing sleeve opening air passage is communicated with an air circulation groove 27 of the wrapping head, the other end of the gluing sleeve opening air passage is connected with an air passage of a vacuum generator, and a shutoff valve 2 is arranged on the air passage of the vacuum generator. When the vacuum generator works, the shutoff valve is opened, the upper rubber sleeve opens the air passage to generate negative pressure, two O-shaped sealing rings of the wrapping head are in contact with the inner wall of the upper sleeve to form sealing, the gas circulation groove forms negative pressure, and a gap between the upper wrapping head component and the latex sleeve forms negative pressure through a gas hole in the gas circulation groove, so that the latex sleeve in the upper wrapping head component is fully opened, the cigar is easily put into the wrapping head at the moment, the shutoff valve is closed after the cigar is put into the cigar, and the latex sleeve is recovered to wrap the cigar pack.

As shown in fig. 1, 2, 3 and 4, the lower and upper wrapping head assemblies have substantially the same structure, that is, the lower wrapping head assembly also comprises a latex sleeve, a wrapping head and an O-ring, the wrapping head is a lower wrapping head 10, the inside of the wrapping head is a cavity, and the upper and lower ends are open. The lower extreme is provided with O type sealing washer mounting groove respectively on the outer fringe of parcel head, and O type sealing washer is installed in O type sealing washer mounting groove, is provided with the gas circulation groove on the lateral wall at parcel head middle part, is provided with the gas pocket in the gas circulation groove, and the gas pocket runs through the first lateral wall of parcel, with the first inside cavity intercommunication of parcel. The latex sleeve is arranged in the wrapping head, the upper end of the latex sleeve is arranged at the upper end part of the wrapping head, and the lower end of the latex sleeve is arranged at the lower end part of the wrapping head. The lower sleeve 5 is a cylinder matched with the inner cavity of the upper sleeve in shape, a sealing ring mounting groove 26 is arranged on the outer side wall of the cylinder and is respectively an upper sealing ring mounting groove and a lower sealing ring mounting groove, and sealing rings 9 are respectively arranged in the two mounting grooves. The upper sleeve is sleeved on the lower sleeve (as shown in fig. 6), and the inner cavity of the upper sleeve and the lower sleeve pass through a sealing ring 9. When the upper sleeve moves up and down, the distance between the wrapping head of the upper sleeve and the wrapping head of the lower sleeve can be adjusted, the distance can be used for matching cigars with different lengths, and the distance between the upper edge of the upper sleeve and the lower edge of the lower sleeve is the wrapping length X of the cigars. The upper end tip department of lower sleeve is equipped with the counter bore, and the parcel head of parcel head subassembly is installed in the counter bore down, and lower sleeve is equipped with down the gum cover and opens gas circuit 6, and the one end that the gas circuit was opened to lower gum cover communicates with the gas flow groove of parcel head, and the gas circuit of vacuum generator is connected to the other end that the gas circuit was opened to lower gum cover, is provided with the shutoff valve on vacuum generator's the gas circuit. When the vacuum generator works, the shutoff valve is opened, the lower rubber sleeve opens the air passage to generate negative pressure, two O-shaped sealing rings of the wrapping head are in contact with the inner wall of the lower sleeve to form sealing, the gas circulation groove forms negative pressure, and a gap between the lower wrapping head component and the latex sleeve forms negative pressure through a gas hole in the gas circulation groove, so that the latex sleeve of the lower wrapping head component is fully opened, the cigar is easily put into the wrapping head at the moment, the shutoff valve is closed after the cigar is put into the cigar, and the latex sleeve is recovered to be wrapped around the cigar pack. And a suction resistance suction air passage 7 is arranged in the lower sleeve and is communicated with the counter bore of the wrapping head so as to be communicated with the lower wrapping head assembly. The resistance-suction gas path is connected with a resistance-suction measuring sensor, and the measuring sensor obtains the resistance value of the cigar by sucking the cigar.

As shown in fig. 4, 7, 8 and 9, the upper sleeve fixing block 4 is disposed on the lower outer edge of the upper sleeve and connected to the sliding connection base 19, and the upper sleeve moves synchronously when the sliding connection base moves up and down. The lower sleeve fixing block 3 is arranged on the outer edge of the lower portion of the lower sleeve and is fixedly connected with the upright post 21, and the lower sleeve is parallel to the linear guide rail, the upright post and the ball screw. The side wall of the lower sleeve is provided with a measuring scale 25, and when the upper sleeve moves up and down, the numerical value of the measuring scale exposed from the lower sleeve is the wrapping length required by the cigar resistance test.

The working process is as follows: before measurement, the hand wheel is rotated left and right to enable the ball screw nut to move up and down along the ball screw to drive the sliding connecting seat to move up and down synchronously, the sliding block and the upper sleeve which are fixed on the sliding connecting seat also move up and down relatively, the upper sleeve moves up and down relatively to the lower sleeve, when the upper sleeve moves up and down, the numerical value of the scale which is exposed from the lower sleeve is measured, namely the wrapping length during the cigar smoking resistance test, when the required wrapping length is obtained, the rotation of the hand wheel is stopped, the upper and lower shutoff valves are opened, the vacuum generator starts to work to enable the upper rubber sleeve to open the air passage and the lower rubber sleeve to open the air passage and generate negative pressure simultaneously, the latex sleeves of the upper wrapping head and the lower wrapping head are opened simultaneously, the cigar which needs to be measured is put in, after the cigar is put into a measuring position, the shutoff valve is closed to enable the upper rubber sleeve to open the air passage and enable the lower rubber sleeve to open the air passage to have the internal pressure at normal pressure, the latex sleeve of the upper wrapping head and the latex sleeve of the lower wrapping head both recover to wrap the cigar packet, the cigars are sucked through the suction resistance suction air path, and the suction resistance value of the cigar is obtained by the suction resistance measuring sensor. When cigar products with the same length are measured, only the closing valve needs to be opened repeatedly to replace the test product, and when cigars with other specifications (different lengths) need to be measured, the action of adjusting the distance between the upper wrapping head and the lower wrapping head is repeated.

The cigar resistance-absorbing wrapping test head provided by the invention can wrap cigars with different lengths, such as half wrapping, full wrapping or wrapping with specific length and size, a plurality of resistance-absorbing test heads which are specifically matched are not required to be manufactured according to different lengths of the cigars, only one test head capable of adjusting the wrapping length is required, the processing and manufacturing cost is greatly reduced, the convenience in use of the test head is improved, and the use efficiency is improved.

In order to realize the adjustment of the wrapping length, the traditional single-section wrapping mode is changed into a multi-section wrapping mode, and the distance between two wrapping heads can be adjusted, so that the cigars with different lengths can be wrapped at two ends or wrapped by other specified lengths under the device.

This kind of adjustable parcel mode has following advantage:

1. the two-section type wrapping mode can realize the wrapping measurement of cigars with different lengths; by adjusting the distance between the two wrapping heads.

2. Adopt ball and linear guide between the parcel head, the adjusting distance is convenient in the use, only needs to rotate the hand wheel and can easily change parcel length to the axiality between two parcel heads obtains guaranteeing, can effectively guarantee the seal of air current at the in-process of adjusting length.

3. The same wrapping length is realized, a single-section wrapping needs to manufacture a testing head matched with the length of the cigar, the manufacturing cost is higher, and the replacement is more complicated in the using process; the sectional type package with the adjustable length can realize functions only by adjusting the package position through a hand wheel.

4. The latex sleeves used for measuring cigars with different lengths are the same in length and have universality, and the single-section latex sleeve needs to be matched with the length of the wrapping head.

Example 2

The cigar samples with 8 specifications (numbers A-H) are selected, the sizes of the samples are representative in cigar markets at home and abroad, specific sample information is detailed in table 1, and each sample with each specification is 30.

The experimental steps are as follows: a suction resistance testing instrument and an accessory capable of adjusting the test wrapping depth are adopted. The resistance to cigar smoking was measured for each sample at 3 wrapping depths (latex tube was used for wrapping 3 ways: 15mm at the lower end of cigar, half length wrapped cigar, full wrap).

Recording a test result; averaging and standard deviation of the cigar resistance measurements for 3 wrapping depths per sample, dividing the standard deviation by the average (i.e. absolute standard deviation, shown as a percentage) as a single measurement of the uniformity of the handmade cigar; for each specification, the average of the individual measurements of the uniformity of 30 cigar embryo samples was taken as the test result for the uniformity of cigar embryos of that specification, see table 2 and figure 10.

TABLE 18 cigar blanks of specification

Serial number	Length/mm	Circumference/mm
			A	115	38.5
B	110	47.0
			C	144	52.3
D	124	62.3
			E	160	69.8
F	194	60
			G	191.8	75.0
H	190	47

Table 28 cigar tobacco blank uniformity test results

A

B

C

D

E

F

G

H

1.42％

9.34％

12.06％

12.70％

12.28％

6.97％

4.31％

5.05％

According to the method of the present invention, the larger the value of the uniformity test result, the better the uniformity, and it can be seen from Table 2 and FIG. 1 that among the 8 samples, i.e., the sample D is the best in the rolling uniformity, and the worst is A, the arrangement of the sample rolling uniformity is D > E > C > B > F > H > G > A from good to poor.

Comparative example 1

Cigar samples of 8 specifications, which were the same as in example 2, were inspected by manual quality inspection, and the inspection objects for each specification were samples produced in three batches, and the number of the inspection samples for each batch was 300. The inspection contents are the number of cigarettes which are not rolled uniformly, such as the concave parts and the convex parts of the cigarettes, and the ratio of the cigarettes which are not rolled uniformly is calculated, and the results are shown in table 3 and figure 11.

The ratio of the rolled uneven cigarettes is (uneven number of the rolled cigarettes in batch 1, uneven number of the rolled cigarettes in batch 2, uneven number of the rolled cigarettes in batch 3)/the total amount of the three batches of test samples; example (16+10+8)/900 ═ 3.78%.

Manual inspection test result of uneven cigar production with table 38 specifications

As can be seen from Table 3 and FIG. 11, the larger the ratio of the rolled non-uniform products is manually checked, the worse the rolling uniformity is, i.e., the best the rolling uniformity is, the sample D, and the worst is, the good to poor the rolling uniformity of the sample is arranged as D > C > E > F > B > G > H > A.

Therefore, the test results show that compared with the existing manual detection method, the evaluation method related to the invention has consistent trend, so that the method can accurately judge the rolling uniformity.

Example 3

Cigar tobacco blank samples of A and E specifications in the table 1 are selected, and 30 cigar tobacco blank samples of each specification are selected (30 cigar tobacco blank samples of each specification are respectively numbered as No. 1, No. 2 and No. 3 … … 30).

The test steps are as follows: the resistance of cigars under 3 wrapping depths was measured for each sample using a resistance-to-draw tester (latex tubes were used for wrapping, and 3 methods: 15mm wrapping, half length wrapping, full wrapping, respectively), and the test results were recorded.

And (3) testing result analysis method: the average and standard deviation of the measurements of the resistance to smoking of cigars at 3 wrapping depths per sample are taken, the standard deviation divided by the average (i.e. the absolute standard deviation) is taken as a single measurement of the uniformity of the manual cigar, the uniformity test result of each cigar blank is expressed in percentage, according to the method to which the invention relates, the greater the value, the better the uniformity.

As can be seen from fig. 12 and 13, the roll uniformity of sample a is generally poor, and the roll uniformity of sample E is generally good, but the roll uniformity differs between each sample.

The worst coil uniformity in sample a was: nos. 3, 19, 22, 30;

the worst coiling uniformity in sample E was: no. 3 and No. 16.

Comparative example 2

And (3) manually selecting the samples which are not uniformly rolled in the samples A and E by adopting a manual judgment method for 30 samples of the samples A and E, wherein the results are as follows:

the non-uniform rolls selected in sample a were: no. 3, No. 19, No. 22 and No. 30.

The non-uniformity of the rolls selected in sample E was: no. 3 and No. 16.

The results of example 3 and comparative example 2 were analyzed:

(1) the manually judged unqualified products are consistent with the evaluation result of the method, and the manually judged number of the rolled unqualified sample belongs to a part of the evaluation result of the method (the enclosed part of the square frame is a part of all lower points). The evaluation method related to the invention is accurate and reliable.

(2) As can be seen from the box marks in FIGS. 12 and 13, there are several data for the same level of values as those in the boxes, but the manual judgment is not selected, because the manual selection mainly selects the rolling unevenness which is obvious in appearance and mainly characterized by the depressions and the protrusions. The evaluation method of the invention can judge the rolling unevenness inside the cigar which can not be observed by naked eyes. Therefore, the evaluation method can more accurately select unqualified products.

Although the invention has been described herein with reference to illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure. More specifically, various variations and modifications may be made to the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure herein. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.

Claims

1. A method for evaluating the cigar rolling uniformity is characterized by comprising the following steps:

(2) calculating the average value and the standard deviation of the suction resistance data of different wrapping depths obtained by the same tested cigar sample;

2. The method of evaluating cigar rolling uniformity according to claim 1, wherein a larger value of the calculated absolute standard deviation indicates a better rolling uniformity of the cigar sample tested.

3. The method of evaluating cigar rolling uniformity according to claim 1, wherein the resistance to draw of the cigar sample under test is measured using a resistance to draw tester capable of adjusting the test wrap depth.

4. The method of evaluating cigar rolling uniformity according to claim 1, wherein 3-50 different wrap depth draw resistance data are tested for the same cigar sample tested.

5. The method of evaluating cigar rolling uniformity according to claim 4, wherein each cigar sample tested is tested for 3 different wrap depths of resistance to draw data, wherein when testing the resistance to draw data for the first wrap depth, the wrapping head wraps the cigar sample tested for 10-30 mm; when the suction resistance data of the second wrapping depth is tested, the wrapping depth of the wrapping head to the tested cigar sample is half of the length of the tested cigar sample, and when the suction resistance data of the third wrapping depth is tested, the wrapping depth of the wrapping head to the tested cigar sample is full wrapping.

6. The method of claim 1, wherein more than 10 cigars in a batch of cigars are randomly selected to form a set of cigar samples to be tested, the cigar samples in the set are tested for resistance data at a plurality of different wrapping depths, the absolute standard deviation of the resistance data of each cigar sample to be tested is calculated, and the absolute standard deviation of the resistance data of all cigar samples to be tested in the set is arithmetically averaged, so as to evaluate the cigar rolling uniformity of the batch.

7. The method of claim 6, wherein 10-50 cigars are randomly selected from the same batch of cigars to form the set of cigar samples to be tested.

8. The method of evaluating uniformity of cigar rolling according to claim 1, wherein the absolute standard deviation is expressed as a percentage, and a cigar sample to be tested having an absolute standard deviation of less than 2% is judged to have a uniformity failure.

9. The method of evaluating uniformity of cigar rolling according to claim 1, wherein the absolute standard deviation is expressed as a percentage, and a cigar sample to be tested having an absolute standard deviation of less than 1% is judged to have a uniformity failure.

10. The method of claim 3, wherein the cigar sample is wrapped with latex tube by the resistance tester.